1
|
Zhang C, Lu P, Wei S, Hu C, Miyoshi M, Okamoto K, Itoh H, Okuda S, Suzuki M, Kawakami H, Nagata K. Refolding, Crystallization, and Crystal Structure Analysis of a Scavenger Receptor Cysteine-Rich Domain of Human Salivary Agglutinin Expressed in Escherichia coli. Protein J 2024; 43:283-297. [PMID: 38265733 PMCID: PMC11058800 DOI: 10.1007/s10930-023-10173-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/24/2023] [Indexed: 01/25/2024]
Abstract
Scavenger receptors are a protein superfamily that typically consists of one or more repeats of the scavenger receptor cysteine-rich structural domain (SRCRD), which is an ancient and highly conserved protein module. The expression and purification of eukaryotic proteins containing multiple disulfide bonds has always been challenging. The expression systems that are commonly used to express SRCRD proteins mainly consist of eukaryotic protein expression systems. Herein, we established a high-level expression strategy of a Type B SRCRD unit from human salivary agglutinin using the Escherichia coli expression system, followed by a refolding and purification process. The untagged recombinant SRCRD was expressed in E. coli using the pET-32a vector, which was followed by a refolding process using the GSH/GSSG redox system. The SRCRD expressed in E. coli SHuffle T7 showed better solubility after refolding than that expressed in E. coli BL21(DE3), suggesting the importance of the disulfide bond content prior to refolding. The quality of the refolded protein was finally assessed using crystallization and crystal structure analysis. As proteins refolded from inclusion bodies exhibit a high crystal quality and reproducibility, this method is considered a reliable strategy for SRCRD protein expression and purification. To further confirm the structural integrity of the refolded SRCRD protein, the purified protein was subjected to crystallization using sitting-drop vapor diffusion method. The obtained crystals of SRCRD diffracted X-rays to a resolution of 1.47 Å. The solved crystal structure appeared to be highly conserved, with four disulfide bonds appropriately formed. The surface charge distribution of homologous SRCRD proteins indicates that the negatively charged region at the surface is associated with their calcium-dependent ligand recognition. These results suggest that a high-quality SRCRD protein expressed by E. coli SHuffle T7 can be successfully folded and purified, providing new options for the expression of members of the scavenger receptor superfamily.
Collapse
Affiliation(s)
- Changyu Zhang
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Peng Lu
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Sibo Wei
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Chaoyue Hu
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Mitsuko Miyoshi
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Ken Okamoto
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Hideaki Itoh
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Suguru Okuda
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Michio Suzuki
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan
| | - Hiroshi Kawakami
- Department of Food Science and Nutrition, Faculty of Home Economics, Kyoritsu Women's University, 2-2-1 Hitotsubashi, Chiyoda-ku, Tokyo, 101-8437, Japan
| | - Koji Nagata
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
- Agricultural Bioinformatics Research Unit, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan.
| |
Collapse
|
2
|
Comparison of truncated human angiotensin-converting enzyme 2 (hACE2) expression in pET28a(+) versus pET-SUMO vector and two Escherichia coli strains. Adv Med Sci 2023; 68:61-70. [PMID: 36746060 DOI: 10.1016/j.advms.2023.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/28/2022] [Accepted: 01/11/2023] [Indexed: 02/05/2023]
Abstract
PURPOSE Truncated human angiotensin-converting enzyme 2 (hACE2) expression rises a great scientific interest, considering its possible therapeutic and diagnostic applications. A promising research direction is the therapeutic use of smaller hACE2 versions with high binding affinity as decoy receptors for S1 glycoprotein of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Another possible application is the use of these truncated versions for the functionalization of appropriate nanomaterials for constructing novel biosensors with a rapid and sensitive response for coronavirus disease 2019 (COVID-19) detection. The present study aimed to find a suitable system for high yield expression of different versions of truncated hACE2. MATERIALS AND METHODS The encoding DNA for the hACE2 fragments (7-507 aa, 16-128 aa, and 30-357 aa) was obtained by PCR amplification using as template pcDNA3.1-hACE2 plasmid and further cloned into pET28a(+) and pET-SUMO vectors. The positive clones were selected and the correct DNA insertion was confirmed through gene sequencing. The truncated hACE2 proteins were further expressed in two E. coli strains, Rosetta(DE3) and BL21(DE3). RESULTS For all three truncated hACE2 mini proteins, pET28a(+) does not lead to protein expression, regardless of the bacterial strain. The situation changes with the use of the pET-SUMO expression system when all hACE2 fragments are expressed, but with higher efficiency in E. coli BL21(DE3) than E. coli Rosetta. CONCLUSION In the present study, we showed that different versions of recombinant hACE2 are successfully expressed in E. coli BL21(DE3) by using pET-SUMO expression system.
Collapse
|
3
|
Song Y, Wang Y, Yan S, Nakamura K, Kikukawa T, Ayabe T, Aizawa T. Efficient recombinant production of mouse-derived cryptdin family peptides by a novel facilitation strategy for inclusion body formation. Microb Cell Fact 2023; 22:9. [PMID: 36635697 PMCID: PMC9838031 DOI: 10.1186/s12934-023-02016-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/01/2023] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND A number of antimicrobial peptides (AMPs) hold promise as new drugs owing to their potent bactericidal activity and because they are often refractory to the development of drug resistance. Cryptdins (Crps) are a family of antimicrobial peptides found in the small intestine of mice, comprising six isoforms containing three sets of disulfide bonds. Although Crp4 is actively being investigated, there have been few studies to date on the other Crp isoforms. A prerequisite for detailed characterization of the other Crp isoforms is establishment of efficient sample preparation methods. RESULTS To avoid degradation during recombinant expression of Crps in E. coli, co-expression of Crps with the aggregation-prone protein human α-lactalbumin (HLA) was used to promote the formation of stable inclusion bodies. Using this method, the production of Crp4 and Crp6 by the BL21 strain was effective, but the expression of other Crp isoforms was not as efficient. The results of a cell-free system study suggested that Crps were degraded, even though a substantial amounts of Crps were synthesized. Therefore, using the Origami™ B strain, we were able to significantly increase the expression efficiency of Crps by promoting the formation of erroneous intermolecular disulfide bonds between HLA and Crps, thereby promoting protein aggregation and inclusion body formation, which prevented degradation. The various Crp isoforms were successfully refolded in vitro and purified using reversed-phase HPLC. In addition, the yield was further improved by deformylation of formyl-Crps. We measured the antibacterial activity of Crps against both Gram-positive and Gram-negative bacteria. Each Crp isoform exhibited a completely different trend in antimicrobial activity, although conformational analysis by circular dichroism did not reveal any significant steric differences. CONCLUSION In this study, we established a novel and efficient method for the production of the cryptdin family of cysteine-containing antimicrobial peptides. Additionally, we found that there were notable differences in the antibacterial activities of the various Crp family members. The expression system established in this study is expected to provide new insights regarding the mechanisms underlying the different antibacterial activities of the Crp family of peptides.
Collapse
Affiliation(s)
- Yuchi Song
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Yi Wang
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Shaonan Yan
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Kiminori Nakamura
- grid.39158.360000 0001 2173 7691Innate Immunity Laboratory, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Takashi Kikukawa
- grid.39158.360000 0001 2173 7691Laboratory of Biological Information Analysis Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Tokiyoshi Ayabe
- grid.39158.360000 0001 2173 7691Innate Immunity Laboratory, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| | - Tomoyasu Aizawa
- grid.39158.360000 0001 2173 7691Laboratory of Protein Science, Graduate School of Life Science, Hokkaido University, Sapporo, Hokkaido Japan
| |
Collapse
|
4
|
Simay S, Akbarzadeh-Khiavi M, Pourseif MM, Barar J, Safary A, Omidi Y. Recombinant production and characterization of L-glutaminase (glsA) as a promiscuity therapeutic enzyme. Appl Microbiol Biotechnol 2022; 106:5511-5524. [PMID: 35876873 DOI: 10.1007/s00253-022-12058-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 06/14/2022] [Accepted: 06/28/2022] [Indexed: 11/02/2022]
Abstract
Because of the therapeutical impacts of hydrolytic enzymes in different diseases, in particular malignancies, we aimed to produce a recombinant putative L-glutaminase (GLS ASL-1) from a recently characterized halo-thermotolerant Bacillus sp. SL-1. For this purpose, the glsA gene was identified and efficiently overexpressed in the Origami™ B (DE3) strain. The yield of the purified GLS ASL-1 was ~ 20 mg/L, indicating a significant expression of recombinant enzyme in the Origami. The enzyme activity assay revealed a significant hydrolytic effect of the recombinant GLS ASL-1 on L-asparagine (Asn) (i.e., Km 39.8 μM, kcat 19.9 S-1) with a minimal affinity for L-glutamine (Gln). The GLS ASL-1 significantly suppressed the growth of leukemic Jurkat cells through apoptosis induction (47.5%) in the IC50 dosage of the enzyme. The GLS ASL-1 could also change the Bax/Bcl2 expression ratio, indicating its apoptotic effect on cancer cells. The in silico analysis was conducted to predict structural features related to the histidine-tag exposure in the N- or C-terminal of the recombinant GLS ASL-1. In addition, molecular docking simulation for substrate specificity revealed a greater binding affinity of Asn to the enzyme binding-site residues than Gln, which was confirmed in experimental procedures as well. In conclusion, the current study introduced a recombinant GLS ASL-1 with unique functional and structural features, highlighting its potential pharmaceutical and medical importance. GLS ASL-1 represents the first annotated enzyme from Bacillus with prominent asparaginase activity, which can be considered for developing alternative enzymes in therapeutic applications. KEY POINTS: • Hydrolytic enzymes have critical applications in different types of human malignancies. • A recombinant L-glutaminase (GLS ASL-1) was produced from halo-thermotolerant Bacillus sp. SL-1. • GLS ASL-1 displayed a marked hydrolytic activity on L-asparagine compared to the L-glutamine. • GLS ASL-1 with significant substrate promiscuity may be an alternative for developing novel pharmaceuticals.
Collapse
Affiliation(s)
- Shayan Simay
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mostafa Akbarzadeh-Khiavi
- Liver and Gastrointestinal Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad M Pourseif
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jaleh Barar
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azam Safary
- Connective Tissue Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Yadollah Omidi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, 33328, USA.
| |
Collapse
|
5
|
Al-Danoon O, Mazumder S, Chaudhary BP, Nukala V, Bishop B, Cahoon G, Mohanty S. Structural and Functional Characterization of European Corn Borer, Ostrinia nubilalis, Pheromone Binding Protein 3. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:14013-14023. [PMID: 34758619 DOI: 10.1021/acs.jafc.1c03775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ostrinia nubilalis, a lepidopteran moth, also known as the European corn borer, has a major impact on the production of economically important crops in the United States and Europe. The female moth invites the male moth for mating through the release of pheromones, a volatile chemical signal. Pheromone binding proteins (PBPs) present in the male moth antennae are believed to pick up the pheromones, transport them across the aqueous sensillum lymph, and deliver them to the olfactory receptor neurons. Here we report for the first time the cloning, expression, refolding, purification, and structural characterization of Ostrinia nubilalis PBP3 (OnubPBP3). The recombinant protein showed nanomolar affinity to each isomer of the Ostrinia pheromones, E- and Z-11-tetradecenyl acetate. In a pH titration study by nuclear magnetic resonance, the protein exhibited an acid-induced unfolding at pH below 5.5. The molecular dynamics simulation study demonstrated ligand-induced conformational changes in the protein with both E- and Z-isomers of the Ostrinia pheromone. The simulation studies showed that while protein flexibility decreases upon binding to E-pheromone, it increases when bound to Z-pheromone. This finding suggests that the OnubPBP3 complex with E-pheromone is more stable than with Z-pheromone.
Collapse
Affiliation(s)
- Omar Al-Danoon
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Suman Mazumder
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Bharat P Chaudhary
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Viswanath Nukala
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Benton Bishop
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Gage Cahoon
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Smita Mohanty
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| |
Collapse
|
6
|
Serrano Y, Brito SM, Pimienta E, Falero A, Marrero K. Soluble production of a full-length human papillomavirus type 16 L1 protein by Escherichia coli. BIONATURA 2021. [DOI: 10.21931/rb/2021.06.02.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Persistent infection with human papillomavirus type 16 (HPV16) causes the development of cervical cancer. Escherichia coli is a cost-effective host successfully used to develop a second-generation vaccine against HPV, based on the purification of soluble truncated L1 protein variants. Previous attempts to produce soluble full-length HPV16-L1 protein by E. coli have failed. This study was aimed at cloning a Cuban HPV16-L1 gene in E. coli and assessing its expression as a soluble full-length L1 protein by manipulating culture conditions. The L1 gene was amplified from a Cuban patient’s cervical sample and cloned into pET28a and pBAD/Myc-HisA vectors. Production and solubility of L1 protein were evaluated in E. coli TOP10 harboring pBADHPV16-L1 plasmid and E. coli BL21-(DE3), Rosetta-(DE3)/pLysS, and SHuffle® T7 Express lysY strains harboring pETHPV16-L1 plasmid, grown under arabinose (0.2%)- or isopropyl β-D-1-thiogalactopyranoside (IPTG, 100 µM)-induction or Super Broth-based auto-induction for 24 and 48 h. The recombinant plasmids pETHPV16-L1 and pBADHPV16-L1 were constructed. The HPV16-L1 protein was produced insoluble to high levels in conventionally IPTG-induced E. coli-pETHPV16-L1 cells. However, under auto-induction, soluble full-length HPV16-L1 protein was successfully produced at similar levels by E. coli BL21 (DE3), Rosetta (DE3) pLysS and SHuffle® T7 Express lysY cells, reaching up to 7.2 ± 0.5% and 14.3 ± 1.6% of the total proteins in the soluble fraction after growing for 24 and 48 h, respectively. It is concluded that the auto-induction procedure at 18 °C with 30 µM IPTG and 100 rev/min promotes soluble full-length HPV16-L1 protein production by E. coli.
Collapse
Affiliation(s)
- Yunier Serrano
- Unit for Biological Products Research, Division of Research, Development & Innovation, National Center for Scientific Research, Avenue 25 and 158. Cubanacán, Playa, La Habana, Cuba. P.O. Box 6414
| | | | - Elsa Pimienta
- Unit for Biological Products Research, Division of Research, Development & Innovation, National Center for Scientific Research, Avenue 25 and 158. Cubanacán, Playa, La Habana, Cuba. P.O. Box 6414
| | - Alina Falero
- Unit for Biological Products Research, Division of Research, Development & Innovation, National Center for Scientific Research, Avenue 25 and 158. Cubanacán, Playa, La Habana, Cuba. P.O. Box 6414
| | - Karen Marrero
- Unit for Biological Products Research, Division of Research, Development & Innovation, National Center for Scientific Research, Avenue 25 and 158. Cubanacán, Playa, La Habana, Cuba. P.O. Box 6414
| |
Collapse
|
7
|
Soheili S, Jahanian-Najafabadi A, Akbari V. Evaluation of soluble expression of recombinant granulocyte macrophage stimulating factor (rGM-CSF) by three different E. coli strains. Res Pharm Sci 2020; 15:218-225. [PMID: 33088322 PMCID: PMC7540813 DOI: 10.4103/1735-5362.288424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 03/09/2020] [Accepted: 04/13/2020] [Indexed: 01/08/2023] Open
Abstract
Background and purpose: Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a cytokine with a wide range of therapeutic applications although expression of GM-CSF in Escherichia coli (E. coli) usually leads to formation of insoluble aggregates mostly lack biological activity. The aim of this study was to compare the soluble expression level of GM-CSF in three E. coli strains, BL21 (DE3), SHuffle® T7 and Origami™ 2 (DE3). Experimental approach: The effect of different temperatures and inducer concentrations on soluble expression of GM-CSF was evaluated. The soluble GM-CSF was subjected to endotoxin removal and purification using nickel-nitrilotriacetic acid (Ni-NTA) affinity chromatography, ultrafiltration. The biological activity of produced GM-CSF was evaluated based on its growth promotion effect on TF-1 cell lines by MTT assay method. Findings / Results: A significant improvement of the soluble yield of GM-CSF (about 30% of GM-CSF was expressed as soluble proteins) was observed when protein expression was induced at 30 °C with 0.5 mM isopropyl β- d-1-thiogalactopyranoside (IPTG) in E. coli Shuffle T7. The soluble GM-CSF with a high purity up to 95 % and specific activity of 1.25 × 104 IU/μg was obtained. Conclusion and implications: The proposed strategy here can be used to improve the soluble expression of other hard-to-express proteins with similar structural properties (i.e., containing disulfide binds or cysteine).
Collapse
Affiliation(s)
- Sina Soheili
- Department of Pharmaceutical Biotechnology and Isfahan Pharmaceutical Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Ali Jahanian-Najafabadi
- Department of Pharmaceutical Biotechnology and Isfahan Pharmaceutical Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Vajihe Akbari
- Department of Pharmaceutical Biotechnology and Isfahan Pharmaceutical Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| |
Collapse
|
8
|
Chen W, Zhang C, Wu Y, Su X. Soluble expression and purification of high-bioactivity recombinant human bone morphogenetic protein-2 by codon optimisation in Escherichia coli. Protein Eng Des Sel 2019; 32:153-157. [PMID: 31603219 DOI: 10.1093/protein/gzz028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 06/19/2019] [Accepted: 07/07/2019] [Indexed: 11/13/2022] Open
Abstract
We developed a simple method of preparing recombinant human bone morphogenetic protein-2 (rhBMP-2) with high biological activity. This rhBMP-2 was overproduced in Escherichia coli as a fusion protein with thioredoxin 6xHis-tag at its amino terminus. The cDNA fragment of human bone morphogenetic protein-2 (hBMP-2) fused to the secretion signal of alkaline phosphatase (PhoA) was expressed under T7 promoter in E. coli. After DNA sequence confirmation, the recombinant vector pETpho-bmp2 was transformed into E. coli BL21 (DE3). rhBMP-2 was produced by the recombinant strain pETpho-bmp2/BL21 (DE3) in a soluble form with an yield of 6.2 mg/L culture. Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) results showed that the molecular weight of the product was approximately 28 kD. Moreover, rhBMP-2 was secreted as a dimer with a natural structure. rhBMP-2, purified by Ni Nitrilotriacetic acid Agarose (Ni-NTA) affinity chromatography, was used to examine osteosarcoma MG-63 cells and assay the alkaline phosphatase (ALP) activity. Results showed that rhBMP-2 induced MG-63 cell differentiation. When the final concentration was 500 ng/mL, the effect was more remarkable and ALP activity reached 525% compared with that of the control group.
Collapse
Affiliation(s)
- Wei Chen
- Shaoxing University Yuanpei College, Shaoxing, Zhejiang 312000, China.,College of Life Science, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Caiqian Zhang
- Shaoxing University Yuanpei College, Shaoxing, Zhejiang 312000, China
| | - Yeqing Wu
- College of Life Science, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Xiuping Su
- Shaoxing University Yuanpei College, Shaoxing, Zhejiang 312000, China
| |
Collapse
|
9
|
Design of Experiments As a Tool for Optimization in Recombinant Protein Biotechnology: From Constructs to Crystals. Mol Biotechnol 2019; 61:873-891. [DOI: 10.1007/s12033-019-00218-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
10
|
Sadeghian-Rizi T, Ebrahimi A, Moazzen F, Yousefian H, Jahanian-Najafabadi A. Improvement of solubility and yield of recombinant protein expression in E. coli using a two-step system. Res Pharm Sci 2019; 14:400-407. [PMID: 31798656 PMCID: PMC6827196 DOI: 10.4103/1735-5362.268200] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Overexpression of recombinant proteins in Escherichia coli results in inclusion body formation, and consequently decreased production yield and increased production cost. Co-expression of chaperon systems accompanied by recombinant protein is a general method to increase the production yield. However, it has not been successful enough due to imposed intense stress to the host cells. The aim of this study was to balance the rate of protein production and the imposed cellular stresses using a two-step expression system. For this purpose, in the first step, green fluorescent protein (GFP) was expressed as a recombinant protein model under control of the T7-TetO artificial promoter-operator, accompanied by Dnak/J/GrpE chaperon system. Then, in the next step, TetR repressor was activated automatically under the control of the stress promoter ibpAB and suppressed the GFP production after accumulation of inclusion bodies. Thus in this step incorrect folded proteins and inclusion bodies are refolded causing increased yield and solubility of the recombinant protein and restarting GFP expression again. Total GFP, soluble and insoluble GFP fractions, were measured by Synergy H1 multiple reader. Results showed that expression yield and soluble/insoluble ratio of GFP have been increased 5 and 2.5 times using this system in comparison with the single step process, respectively. The efficiency of this system in increasing solubility and production yield of recombinant proteins was confirmed. The two-step system must be evaluated for expression of various proteins to further confirm its applicability in the field of recombinant protein production.
Collapse
Affiliation(s)
- Tahereh Sadeghian-Rizi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.,Student Research Committee, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Azade Ebrahimi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran.,Student Research Committee, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Fatemeh Moazzen
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Hesam Yousefian
- Student Research Committee, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Ali Jahanian-Najafabadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| |
Collapse
|
11
|
Barazesh M, Mostafavipour Z, Kavousipour S, Mohammadi S, Mokarram P. Two Simple Methods for Optimizing the Production of "Difficult-to-Express" GnRH-DFF40 Chimeric Protein. Adv Pharm Bull 2019; 9:423-431. [PMID: 31592077 PMCID: PMC6773931 DOI: 10.15171/apb.2019.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 06/23/2019] [Accepted: 06/24/2019] [Indexed: 12/20/2022] Open
Abstract
Purpose: GnRH-DFF40 (gonadotropin releasing hormone - DNA fragmentation factor 40) is
a humanized recombinant immunotoxin and serves as a prospective candidate for targeted
therapy of gonadotropin releasing hormone receptor (GnRHR) overexpressing malignancies.
However, its production in Escherichia coli in a soluble and functional form still remains a
challenge. Here we introduce two successful and reproducible conditions for production and
purification of “difficult-to-express” GnRH-DFF40 protein.
Methods: A synthetic codon optimized GnRH-DFF40 fusion gene was cloned in pET28a
plasmid. Two methods including high cell density IPTG induction (HCDI) and autoinduction
method (AIM) with a focus on obtaining high cell density have been investigated to enhance the
protein production in (E. coli). Moreover, to obtain higher protein production several factors in
the AIM method including carbon sources, incubation time and temperature, plasmid stability
and double colony selection, were optimized.
Results: Remarkable amounts of soluble GnRH-DFF40 protein were achieved by both methods.
Cell density and protein yields in AIM was about 1.5 fold higher than that what obtained using
HCDI. Initial screening showed that 25ºC is better to achieve higher protein production in both
methods. pH alterations in AIM were maintained in a more constant level at 25ºC and 37ºC
temperatures without any detrimental effects on cell growth during protein production phase
up to 21 hours after incubation. Plasmid stability during growth and expression induction phase
was maintained at a high level of 98% and 96% for AIM and HCDI methods, respectively. After
parameter optimization and double colony selection in AIM, a very high yield of recombinant
protein was achieved (528.3 mg/L).
Conclusion: With the optimization of these high cell density expression methods, reproducible
manifold enhancement of soluble protein yields can be achieved for “difficult-to-express”
GnRH-DFF40 compared to conventional expression methods.
Collapse
Affiliation(s)
- Mahdi Barazesh
- Department of Biotechnology, School of Advanced Medical Science and Technologies, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Zohreh Mostafavipour
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IR Iran.,Recombinant Proteins Lab, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Soudabeh Kavousipour
- Department of Biotechnology, School of Advanced Medical Science and Technologies, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Shiva Mohammadi
- Department of Biotechnology, School of Advanced Medical Science and Technologies, Shiraz University of Medical Sciences, Shiraz, IR Iran
| | - Pooneh Mokarram
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, IR Iran
| |
Collapse
|
12
|
Mohammadi E, Seyedhosseini-Ghaheh H, Mahnam K, Jahanian-Najafabadi A, Mir Mohammad Sadeghi H. Reteplase: Structure, Function, and Production. Adv Biomed Res 2019; 8:19. [PMID: 31016177 PMCID: PMC6446582 DOI: 10.4103/abr.abr_169_18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Thrombolytic drugs activate plasminogen which creates a cleaved form called plasmin, a proteolytic enzyme that breaks the crosslinks between fibrin molecules. The crosslinks create blood clots, so reteplase dissolves blood clots. Tissue plasminogen activator (tPA) is a well-known thrombolytic drug and is fibrin specific. Reteplase is a modified nonglycosylated recombinant form of tPA used to dissolve intracoronary emboli, lysis of acute pulmonary emboli, and handling of myocardial infarction. This protein contains kringle-2 and serine protease domains. The lack of glycosylation means that a prokaryotic system can be used to express reteplase. Therefore, the production of reteplase is more affordable than that of tPA. Different methods have been proposed to improve the production of reteplase. This article reviews the structure and function of reteplase as well as the methods used to produce it.
Collapse
Affiliation(s)
- Elmira Mohammadi
- From the Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | | | - Karim Mahnam
- Department of Biology, Faculty of Science, Shahrekord University, Shahr-e Kord, Iran
| | - Ali Jahanian-Najafabadi
- From the Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamid Mir Mohammad Sadeghi
- From the Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
13
|
Malekian R, Jahanian-Najafabadi A, Moazen F, Ghavimi R, Mohammadi E, Akbari V. High-yield Production of Granulocyte-macrophage Colony-stimulating Factor in E. coli BL21 (DE3) By an Auto-induction Strategy. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2019; 18:469-478. [PMID: 31089381 PMCID: PMC6487437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
A novel strategy to increase protein expression yield is unintended induction of expression in complex media, called auto-induction. This method can be used to express proteins under control of the lac promoter without any need to monitor bacterial growth pattern, and addition of specific expression inducers such as Isopropyl β-D-1-thiogalactopyranoside (IPTG) at proper time. In the present study, a codon optimized gene encoding granulocyte-macrophage colony stimulating factor (GM-CSF) was cloned and over-expressed in Escherichia coli BL21 (DE3) using both conventional inducer-based and auto-induction approaches in a shake flask scale and the yield of GM-CSF expression and biomass production was identified. Results showed higher biomass production and expression yield for GM-CSF in case of auto-induction comparing with IPTG-induction. The auto-induction approach was also performed in a fed batch fermentation process in a 2-L bioreactor scale. The feeding strategy yielded an amount of 300 mg/L GM-CSF within 20 h of induction. However, most of the over-expressed GM-CSF was produced as inclusion bodies and following purification and refolding, a final yield of 90 mg/L was achieved. These results suggest that auto-induction approach can be effectively applied in fed-batch fermentation for the large scale production of GM-CSF; however, further optimization of purification process is obligatory to increase the purification yield.
Collapse
|
14
|
Khan AH, Noordin R. Strategies for humanizing glycosylation pathways and producing recombinant glycoproteins in microbial expression systems. Biotechnol Prog 2018; 35:e2752. [DOI: 10.1002/btpr.2752] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Revised: 10/26/2018] [Accepted: 11/16/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Amjad Hayat Khan
- Inst. for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia 11800 Penang Malaysia
| | - Rahmah Noordin
- Inst. for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia 11800 Penang Malaysia
| |
Collapse
|
15
|
Fathi-Roudsari M, Maghsoudi N, Maghsoudi A, Niazi S, Soleiman M. Auto-induction for high level production of biologically active reteplase in Escherichia coli. Protein Expr Purif 2018; 151:18-22. [DOI: 10.1016/j.pep.2018.05.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 04/29/2018] [Accepted: 05/14/2018] [Indexed: 11/26/2022]
|
16
|
Soluble expression of horseradish peroxidase in Escherichia coli and its facile activation. J Biosci Bioeng 2018; 126:431-435. [DOI: 10.1016/j.jbiosc.2018.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/02/2018] [Accepted: 04/04/2018] [Indexed: 12/19/2022]
|
17
|
Isolation and characterization of a novel serine protease inhibitor, SjSPI, from Schistosoma japonicum. Parasitol Int 2018; 67:415-424. [DOI: 10.1016/j.parint.2018.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 04/02/2018] [Accepted: 04/07/2018] [Indexed: 11/21/2022]
|
18
|
You Z, Zhang S, Liu X, Wang Y. Enhancement of prodigiosin synthetase (PigC) production from recombinant Escherichia coli through optimization of induction strategy and media. Prep Biochem Biotechnol 2018; 48:226-233. [DOI: 10.1080/10826068.2017.1421965] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Zhongyu You
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang, People’s Republic of China
| | - Suping Zhang
- Nanhu College, Jiaxing University, Jiaxing, Zhejiang, People’s Republic of China
| | - Xiaoxia Liu
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang, People’s Republic of China
| | - Yujie Wang
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing, Zhejiang, People’s Republic of China
| |
Collapse
|
19
|
Calcines-Cruz C, Olvera A, Castro-Acosta RM, Zavala G, Alagón A, Trujillo-Roldán MA, Valdez-Cruz NA. Recombinant-phospholipase A2 production and architecture of inclusion bodies are affected by pH in Escherichia coli. Int J Biol Macromol 2018; 108:826-836. [DOI: 10.1016/j.ijbiomac.2017.10.178] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 10/30/2017] [Accepted: 10/30/2017] [Indexed: 12/20/2022]
|
20
|
Xu Y, Shi Y, Zhou J, Yang W, Bai L, Wang S, Jin X, Niu Q, Huang A, Wang D. Structure-based antigenic epitope and PEGylation improve the efficacy of staphylokinase. Microb Cell Fact 2017; 16:197. [PMID: 29137636 PMCID: PMC5686944 DOI: 10.1186/s12934-017-0801-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 10/25/2017] [Indexed: 12/31/2022] Open
Abstract
Staphylokinase (Sak) holds promise for use in thrombolytic therapy for acute myocardial infarction. However, its immunogenicity is a major disadvantage under clinical conditions. PEGylation has become a sophisticated method to decrease that immunogenicity. In this report, according predicted epitope from the active center, five residues, including Gly79, Leu82, Lys84, Ala97, and Arg104 have been mutant as cysteine for mono PEGylation, respectively. According to the relative immunogenicity of Sak or its PEGylation derivatives, the amount of specific anti-Sak IgG antibodies elicited by PEGylation proteins, including C79G, C82L, C84K, C97A, and C104R in BALB/c mice decreased by approximately 15–75% each. PEGylated Sak derivatives showed a decrease of up to 75% in the immune reactivity in PEG-Sak-C104R. Thrombelastography experiments showed that two PEG-conjugated derivatives, PEG-Sak-C97A (Ly30, 68.14 ± 2.51%) and PEG-Sak-C104R (Ly30, 66.49 ± 5.97%), the LY30 of PEG-Sak-C97A, and PEG-Sak-C104R produced values very similar to those of wild-type Sak. The fibrin plate assays showed the bioactivity of PEG-Sak-C104R to exhibit the most activity approximately as much as urokinase (diameter of halo pattern, 18.6 ± 1.06 mm) and tPA (diameter of halo pattern, 17.2 ± 0.49 mm). The Sak PEGylation derivative PEG-Sak-C104R was also selected for further in vivo activity experimentation. The thrombolytic ability of PEG-Sak-C104R is a little lower than wild-type Sak, whereas, this PEGylated protein retained high activity suitable for thrombolytic therapy. Collectively, with the in vivo and in vitro experiments, the present study suggests that site mutant PEGylation, PEG-Sak-C104R, is a suitable type of PEGylation for clinical applications. Further optimization would help maintain the bioactivity and decrease the immunogenicity of staphylokinase.
Collapse
Affiliation(s)
- Yanying Xu
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, China.,Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yueyuan Shi
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, China.,Department of Laboratory Medicine, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China
| | - Jianzhong Zhou
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Wei Yang
- Department of Laboratory Medicine, Hospital of Zhejiang, No. 12 Lingyin Road, Xihu District, Hangzhou, 310013, People's Republic of China
| | - Lei Bai
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Shilei Wang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China.,Department of Laboratory Medicine, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China
| | - Xin Jin
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China.,Department of Laboratory Medicine, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China
| | - Qiangsi Niu
- Department of Laboratory Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ailong Huang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, China
| | - Deqiang Wang
- Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, Department of Infectious Diseases, The Second Affiliated Hospital, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China. .,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, China. .,Department of Laboratory Medicine, Chongqing Medical University, YixueYuanlu-1, Chongqing, 400016, People's Republic of China.
| |
Collapse
|
21
|
Chauhan S, Hou CY, Jung ST, Kang TJ. Detection and purification of backbone-cyclized proteins using a bacterially expressed anti-myc-tag single chain antibody. Anal Biochem 2017; 532:38-44. [PMID: 28600127 DOI: 10.1016/j.ab.2017.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 06/01/2017] [Accepted: 06/05/2017] [Indexed: 11/26/2022]
Abstract
A myc-tag and of which recognition by an antibody 9E10 has long been used for the detection and purification of recombinant proteins. We have previously expanded the application of the tag to the specific detection and purification of backbone-cyclized proteins. Here we sought a more practical way to using the 9E10 antibody by expressing its single chain antibody (scAb) form in Escherichia coli. The combined use of a strong T7 promoter and auto-induction strategy rather than early to mid-log induction of a Lac promoter resulted in the soluble over-expression of 9E10 scAb. However, the co-expression of a chaperone, Skp, was absolutely necessary for the activity even when the protein was expressed in a soluble manner. We could purify about 4 mg of 9E10 scAb from 1 l of culture, and the resulting scAb could be used to detect and purify the backbone-cyclized protein as the parental full-length 9E10. Moreover, the immunoaffinity resin prepared using 9E10 scAb could be regenerated several times after the elution of bound proteins using an acid, which added more value to the ready preparation of the active antibody in bacteria.
Collapse
Affiliation(s)
- Sushma Chauhan
- Department of Chemical and Biochemical Engineering, Dongguk University-Seoul, Seoul 04620, South Korea
| | - Chen Yuan Hou
- Department of Chemical and Biochemical Engineering, Dongguk University-Seoul, Seoul 04620, South Korea
| | - Sang Taek Jung
- Department of Bio and Nano Chemistry, Kookmin University, Seoul, 02707, South Korea
| | - Taek Jin Kang
- Department of Chemical and Biochemical Engineering, Dongguk University-Seoul, Seoul 04620, South Korea.
| |
Collapse
|
22
|
Abdoli Nasab M, Jalali Javaran M, Cusido RM, Palazon J. Purification of recombinant tissue plasminogen activator (rtPA) protein from transplastomic tobacco plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 108:139-144. [PMID: 27428368 DOI: 10.1016/j.plaphy.2016.06.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Revised: 06/19/2016] [Accepted: 06/24/2016] [Indexed: 05/17/2023]
Abstract
Plants are low cost platforms for the production of recombinant proteins, but their complexity renders the purification of plant recombinant proteins more difficult than proteins expressed in yeast or bacteria. Plastid transformation enables high-level expression of foreign genes and the accumulation of recombinant proteins in plastid organelles. Histidine (His) tags are widely used for affinity purification of recombinant proteins in a nickel column. The human tissue-type plasminogen activator (tPA) is one of the most important pharmaceutical recombinant proteins involved in the breakdown of blood clots in different parts of the body. The truncated form of the tissue plasminogen activator (K2S) has a longer plasma half-life, better diffusion into the clot, and higher fibrinolytic activity. In a construct designed to insert the K2S gene in the tobacco chloroplast, the sequence of six histidines and a factor Xa protease site was fused to the C-terminus of the K2S protein. The presence and amount of tPA recombinant protein in transplastomic tobacco plants was estimated by ELISA analysis using a specific antibody. The protein was purified from total soluble protein, insoluble protein aggregates and the protein was extracted from the isolated chloroplast using nickel resin and a chromatography column. After digestion of the purified protein with factor Xa, the presence of the purified tPA protein was confirmed by western blot analysis.
Collapse
Affiliation(s)
- Maryam Abdoli Nasab
- Department of Biotechnology, Institute of Science, High Technology and Environmental Science, Graduate University of Advanced Technology, P.O. Box 76315-117, Kerman, Iran.
| | - Mokhtar Jalali Javaran
- Department of Plant Breeding, Faculty of Agiculture, Tarbiat Modares University, P.O. Box 14115-336, Tehran, Iran.
| | - Rosa M Cusido
- Department of Plant Physiology, Faculty of Pharmacy, University of Barcelona, Av. Joan, XXIII, S/n, 08028, Barcelona, Spain.
| | - Javier Palazon
- Department of Plant Physiology, Faculty of Pharmacy, University of Barcelona, Av. Joan, XXIII, S/n, 08028, Barcelona, Spain.
| |
Collapse
|
23
|
Fathi-Roudsari M, Akhavian-Tehrani A, Maghsoudi N. Comparison of Three Escherichia coli Strains in Recombinant Production of Reteplase. Avicenna J Med Biotechnol 2016; 8:16-22. [PMID: 26855731 PMCID: PMC4717461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Escherichia coli (E. coli) is the most extensively used host for the production of recombinant proteins. However, most of the eukaryotic proteins are typically obtained as insoluble, misfolded inclusion bodies that need solubilization and refolding. Reteplase as a highly disulfide-bonded recombinant protein is an example of difficult to express protein in E. coli. METHODS In this study, a codon optimized reteplase gene was synthetically prepared and cloned under the control of an IPTG inducible T7 promoter. The vector was simultaneously transformed and expressed in three different E. coli strains. The ability of strains for expression of this recombinant pharmaceutical was compared. Also, an attempt was made to increase the soluble production of reteplase in SHuffle T7 E. coli with alterations of expression condition like temperature, inducer concentration and oxygen supply. RESULTS High amounts of reteplase were expressed as inclusion bodies in all three strains. BL21 (DE3) showed the highest level of expression in inclusion bodies followed by Rosetta-gami (DE3) and Shuffle T7. Changes of expression conditions were insufficient for soluble expression of reteplase in SHuffle T7 as a genetically engineered host for production of disulfide bonded proteins. CONCLUSION The oxidizing cytoplasm of Rosetta-gami and Shuffle T7 in addition to alterations of cultivation parameters could not result in soluble production of reteplase, although the inclusion bodies produced in these two strains might increase the rate of refolding procedure likely due to formation of folding intermediates.
Collapse
Affiliation(s)
- Mehrnoosh Fathi-Roudsari
- National Institute of Genetic Engineering and Biotechnology (NIGEB), Shahrak-e Pajoohesh, Tehran, Iran,Corresponding authors: Mehrnoosh Fathi-Roudsari, Ph.D., National Institute of Genetic Engineering and Biotechnology, Shahrak-e Pajoohesh, Tehran, Iran, Nader Maghsoudi, Ph.D., Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran, Tel: +98 21 44787401; 22429768-9, Fax: +98 21 44787399, E-mail:;
| | - Asal Akhavian-Tehrani
- National Institute of Genetic Engineering and Biotechnology (NIGEB), Shahrak-e Pajoohesh, Tehran, Iran
| | - Nader Maghsoudi
- Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Corresponding authors: Mehrnoosh Fathi-Roudsari, Ph.D., National Institute of Genetic Engineering and Biotechnology, Shahrak-e Pajoohesh, Tehran, Iran, Nader Maghsoudi, Ph.D., Neurobiology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran, Tel: +98 21 44787401; 22429768-9, Fax: +98 21 44787399, E-mail:;
| |
Collapse
|
24
|
ZHANG Y, BAE YA, ZONG HY, KONG Y, CAI GB. Functionally Expression of Metalloproteinase in Taenia solium Metacestode and Its Evaluation for Serodiagnosis of Cysticercosis. IRANIAN JOURNAL OF PARASITOLOGY 2016; 11:35-45. [PMID: 27095967 PMCID: PMC4835468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Parasite proteases have important roles in cleavage of host proteins during the invasion of host tissues and participate in the parasite's evasion from the host's immune response. The aim of the present study was to estimate a metalloproteinase properties of Taenia solium metacestode (TsMP) during host-parasite interactions, and evaluate its potential as a serodiagnostic antigen for cysticercosis. METHODS The cDNA coding for the mature catalytic domain of TsMP was cloned into pGEX-6P-1 expression vector. A recombinant glutathione S-transferase and TsMP fusion protein was induced. After refolding and purification, enzymatic properties of the recombinant metalloproteinase were observed. Immunoblot assay was processed to evaluate its potential as a serodiagnostic antigen for cysticercosis. RESULTS The recombinant TsMP protein showed proteolytic activity, which preferred host extracellular matrix proteins such as collagen and fibronectin as degradable substrates. In immunoblot assay, 87.5% of sera from patients with cysticercosis showed strong reactivity. In sera from patients with other parasitic infections and from normal controls, it showed high specificity. CONCLUSIONS TsMP might be involved in the processing of numerous host proteins and play an important role in the parasite life cycle. A single recombinant TsMP antigen could have a potential value for serodiagnosis of cysticercosis.
Collapse
Affiliation(s)
- Ying ZHANG
- Dept. of Medical Genetics, Wuhan University School of Basic Medicial Sciences, Wuhan 430071, China
| | - Young-An BAE
- Dept. of Molecular Parasitology, Sungkyunkwan University School of Medicine, Suwon, 440-746, South Korea
| | - Hong-Ying ZONG
- Dept. of Medical Parasitology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Yoon KONG
- Dept. of Molecular Parasitology, Sungkyunkwan University School of Medicine, Suwon, 440-746, South Korea
| | - Guo-Bin CAI
- Dept. of Medical Parasitology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China,Correspondence
| |
Collapse
|